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use futures_util::stream::SplitStream;
use futures_util::StreamExt;
use ockam_core::{async_trait, Address, Decodable, LocalMessage, Result, TransportMessage, Worker};
use ockam_node::Context;
use ockam_transport_core::TransportError;
use tokio::io::{AsyncRead, AsyncWrite};
use tokio_tungstenite::WebSocketStream;
use crate::atomic::{self, ArcBool};
pub struct WebSocketRecvWorker<AsyncStream>
where
AsyncStream: AsyncRead + AsyncWrite + Unpin + Send + 'static,
{
pub(crate) ws_stream: SplitStream<WebSocketStream<AsyncStream>>,
pub(crate) run: ArcBool,
pub(crate) peer_addr: Address,
}
#[async_trait::async_trait]
impl<AsyncStream> Worker for WebSocketRecvWorker<AsyncStream>
where
AsyncStream: AsyncRead + AsyncWrite + Unpin + Send + 'static,
{
type Message = ();
type Context = Context;
async fn initialize(&mut self, ctx: &mut Context) -> Result<()> {
loop {
if !atomic::check(&self.run) {
break;
}
let ws_msg = match self.ws_stream.next().await {
Some(res) => match res {
Ok(ws_msg) => ws_msg,
Err(_e) => {
info!(
"Connection to peer '{}' was closed; dropping stream",
self.peer_addr
);
break;
}
},
None => {
info!(
"Stream connected to peer '{}' is exhausted; dropping it",
self.peer_addr
);
break;
}
};
let data = ws_msg.into_data();
trace!("Received message header for {} bytes", data.len());
let mut msg =
TransportMessage::decode(&data).map_err(|_| TransportError::RecvBadMessage)?;
msg.return_route.modify().prepend(self.peer_addr.clone());
trace!("Message onward route: {}", msg.onward_route);
trace!("Message return route: {}", msg.return_route);
ctx.forward(LocalMessage::new(msg, Vec::new())).await?;
}
ctx.stop_worker(ctx.address()).await?;
Ok(())
}
}